Amazon Pinpoint Channels

A channel represents the platform through which you engage your
audience segment with messages. For example, to send push notifications to users of
your apps,
you must have an Amazon Pinpoint project in which the push notifications channel is
enabled. Amazon Pinpoint supports the following channel types:

Before you can use Amazon Pinpoint to engage your audience, you have to create an
Amazon Pinpoint project, and
that project has to support one or more channels.

After you create a project and enable a channel, you can use your project to send
messages.
You can define the audience segment that you want to engage
and then define a campaign that sends messages to that
segment. Or, to send a message to a limited audience, you can send a
test message without creating a campaign.